Greenwood Village-based NexGen Properties, a private real estate acquisition, development, and investment firm, has purchased a 51,527-square-foot two-story, multi-tenant boutique office building located at 384 Inverness Parkway, in an all-cash transaction for an undisclosed price well below replacement cost. Cushman & Wakefield’s Aaron Johnson and Jon Hendrickson represented the seller San Francisco-based Graham Street Realty in the sale. Constructed in…